Under Science‘s editor-in-chief Holden Thorp, who regularly writes authoritarian “progressive” pieces in his bully pulpit, the entire journal has become woke. (Fortunately, the science articles themselves generally remain untainted by ideology.) But who dares to object to this editorial trend given that every scientist wants their papers published in one of the world’s two premier science journals? (The other is the British journal Nature.). And, as in Scientific American, the editor tends to display op-ed pieces catering to a woke mentality.
The report at hand is especially bad because author Rodrigo Ortega actually leaves out relevant data and distorts other data—all in the cause of promoting transgender women (most who have transitioned after puberty) being allowed to compete in women’s sports against biological women. The title question, asking whether transgender women should be banned from competing with biological women, refers to this recent ruling (excerpts from article are indented):
World Athletics (WA), the governing body for track and field and other running competitions, announced last month that transgender women who went through male puberty can no longer compete in women’s events at international competitions. The policy took effect on 31 March.
And it’s clear for two reasons that the author (and probably Science magazine itself) thinks that trangender women should not be banned.
a.) The article quotes only critics of the ban, not advocates. More important:
b.) The article quotes only one piece of science, based on a tiny sample size, that long-distance runners who transition from biological male to trans female don’t lose their relative position in competing against either members of the pre-transition versus post-transition sex. But they leave out two pieces of more extensive peer-reviewed data that biological males who transition to the female gender retain substantial advantages in athletic-informed traits retain their athletic advantages despite lowered testosterone. Further, the author distorts one study to make it look like transwomen attain athletic par with biological women, when in fact the study shows the opposite.
The clear answer to the question in the title below is NO. But the real answer is, if you go by the data themselves, is “yes.” I conclude that the Science article below is not only biased (probably by ideology), but also misleading, perhaps deliberately so.
Click the screenshot to read.

Two quotes against the WA ban, one from a grad student, the other from a geneticist. There are no quotes from people like Emma Hilton, who would undoubtedly say that the WA ban is the right decision. (I think it was, too.) They are biasing the article simply by using a subset of relevant people. Here’s one quote:
But Joanna Harper, a Ph.D. student at Loughborough University who studies transgender athletes’ performance, questions whether the WA fully considered the scientific evidence. “I was disappointed with the decision,” says Harper, who is transgender. “The idea that it was necessary to ban trans women to protect the female category seems so far-fetched.”
and, in response to the header, “Is there evidence that transgender women athletes have a physiological advantage?,” they quote a geneticist:
Not according to Eric Vilain, a geneticist at the University of California, Irvine, who specializes in gender-based biology. Very little research has been published on transgender athletes, and what has been published didn’t provide enough results to create evidence-based policies, says Vilain, who does not identify as transgender. “It’s not black and white.”
Then the magazine quotes two papers that supposedly show that becoming a trans woman gives you no biological advantage in sport over biological women. Here’s one quote:
For example, a 2021 review found trans women’s muscle mass remains high after transitioning, but their levels of hemoglobin—the oxygen-carrying protein in blood—were comparable to cisgender women’s. Increased levels of hemoglobin facilitate more oxygen transport to muscles when active, and men tend to have higher hemoglobin than women.
Well, click on the link and go to the paper by Joanna Harper et al. What you will find is that yes, Hb levels were comparable to those of cisgender women, but of course Hb levels are not the only factor involved in sport. The Harper et al. paper also says this: (my bolding):
Twenty-four studies were identified and reviewed. Transwomen experienced significant decreases in all parameters measured, with different time courses noted. After 4 months of hormone therapy, transwomen have Hgb/HCT levels equivalent to those of cisgender women. After 12 months of hormone therapy, significant decreases in measures of strength, LBM [lean body mass] and muscle area are observed. The effects of longer duration therapy (36 months) in eliciting further decrements in these measures are unclear due to paucity of data. Notwithstanding, values for strength, LBM and muscle area in transwomen remain above those of cisgender women, even after 36 months of hormone therapy.
Conclusion: In transwomen, hormone therapy rapidly reduces Hgb to levels seen in cisgender women. In contrast, hormone therapy decreases strength, LBM and muscle area, yet values remain above that observed in cisgender women, even after 36 months. These findings suggest that strength may be well preserved in transwomen during the first 3 years of hormone therapy.
Note that although author Ortega talks only about Hb levels, he omits the conclusions about strength, lean body mass, and muscle area, which after transitioning are NOT comparable to those of biological women, but HIGHER—even after three years of testosterone therapy. The last sentence of the Harper et al. paper, “These findings suggest that strength may be well preserved in transwomen during the first 3 years of hormone therapy” is not even mentioned by Ortego, but conflicts completely with what he is trying to show with Hb levels. This cannot be an error—not if Ortega read the paper—but seems to me an example of intellectual dishonesty. The dishonesty is compounded by Ortega’s failure to cite two papers that are far more relevant to judging whether trans women who go through male puberty keep an athletic advantage over biological women.
Here is the other evidence cited in the article.
A rare performance study on trans athletes, a 2015 study by Harper of eight women, found their race times slowed after transitioning from male to female, while their performance relative to sex-matched runners stayed the same. The results suggest they have no advantage over cisgender women.
It’s the same Harper, and in the paper itself (second link), the authors report that using adjusted measures of running ability in trans women relative to biological men before they transitioned, and then to biological women after they had transitioned, there was no significant change. Note that the sample size was eight, that more than half of the data were self-reported times, that these were not elite runners, and that the running abilities were measured via an algorithm rather than by placement in actual races. The data might be all right, but I’m betting that trans women who actually run at these distances (5K and marathons) would perform much better against biological women than against men.
But what’s really almost duplicitous in this article, which came out last month, is its arrant neglect of much more extensive data that has accumulated in the last several years, in particular two reviews of athletic-connected traits in trans women measured before versus after transitioning after puberty. They’re cited in this thread by Emma Hilton, who was an author of one of the papers:
The reference:
Both of these papers came out after the ones cited by Ortega in Science, and I wrote about both of them in January of last year. You should look at the original paper, and also read the summary article by Pike et al. But the papers tell the tale, and what’s below is from the summary of both papers quoted in my post (authors’ words). Don’t take my word for it; read the two scientific papers and the summary:
There have been two high-quality, high-impact academic reviews, both in leading sports journals, of muscle and skeletal physiology in transwomen who have, post-puberty, suppressed testosterone as part of their transition. The reviews cover longitudinal studies; that is, they contain pre-transition metrics such as thigh muscle area and grip strength, and matched data from at least 12 months, occasionally longer, into transition. All transwomen studied had been successfully suppressing testosterone to less than 10 nmol/l for at least one year, and would therefore qualify for inclusion in female sports categories under the regulations specified by the IOC and most sports federations. Collectively, the studies captured by these reviews cover over 800 transwomen in 10 original studies, with data acquired as a routine aspect of ongoing general health assessments within clinical care teams.
To summarize: In transwomen successfully suppressing testosterone for 12 months, skeletal metrics—height, limb/digit length, and shoulder/pelvic width—do not change, and the extent of muscle/strength loss is approximately -5 percent after 12 months, a modest change that is insufficient to bridge the baseline muscular differences between males and females.
Regarding musculoskeletal parameters, Hilton and Lundberg concluded: “The biological advantage, most notably in terms of muscle mass and strength, conferred by male puberty and thus enjoyed by most transgender women is only minimally reduced when testosterone is suppressed as per current sporting guidelines for transgender athletes.”
This conclusion was subsequently confirmed by Joanna Harper and her fellow researchers, who added: “Hormone therapy decreases strength, lean body mass and muscle area, yet values remain above [those] observed in cisgender women, even after 36 months.”
Note that the “subsequent confirmation” was written in 2021 by the same Harper who’s cited six years earlier as supporting transgender women’s “right” to compete in sports, but the author of the Science piece doesn’t mention that paper!
These results match the increasingly numerous examples of trans women taking top honors in various women’s sports.
So what we see is a very biased and distorted new article in Science that, I’m sad to say, looks as if it deliberately neglected highly relevant data showing that trans women retain significant phenotypic traits that would give them athletic advantages in sports competitions against biological women. Now you can say that perhaps the author didn’t dig deeply into the literature (though there isn’t much), but to me it looks like intellectual dishonesty in the service of the ideology Science has promoted in recent years.
It is negligent and reprehensible for the nation’s premier science journal to spin scientific data this way. The facts remain the facts, and to me they support the decision of the World Athletics that it’s unfair to biological women to be forced to compete in track and field against trans women. In this article Science concludes otherwise, but can do so only by twisting previous data and neglecting more comprehensive and relevant data. Anybody who knows anything about this area—even a lowly geneticist like me—knows that data contrary to the author’s (and journal’s) apparent ideology is being omitted or distorted. There is no excuse for this, and you can pass the buck up to the Editor in Chief, Holden Thorp.